Beginners • Re: USB Y-cable

The simplest answer, if it is possible for you, is to get an official RPi 5V1 5A supply.

Right, that would be the easiest solution, however as I don't have the official PSU I wanted to see if I can just mess around and get it working somehow with what I already have

The reason you have an issue with the other supplies is that they will not give the rated power at 5V, but only at a higher voltage. Unless the PSU has a 5V 5A mode, the Pi will only use the default 5V 3A, and will limit the USB current as you have found. Using `usb_max_current_enable=1` in the config file will only work if the supply can produce enough current in the first place, which it seems they can't.

Yeah, the chargers I have might not be able to give 5V 5A (but 3A at least), but I was under impression that `usb_max_current_enable=1` setting would still allow RPi to go beyond the 0.6A limit. I measured RPi powerdraw from the charger while inserting the USB HDD into it and at spin up it was not going above 1.1A altogether while maintaining healthy 5.08V. Meaning that there should be plenty still available?

I know the PSU discussions are quite boring since it was said a million times to get an official PSU, so I am not going to defend my pesky chargers haha. Just wondering how it works then

BTW, you may not like this advice and are free to ignore it. I have an intolerance for tomatoes and do not wish to enrage you further!

Thanks for participating in the discussion anyway!

Check your HDD spec what you're drives ask for.

There is no spec, it's one of the million noname HDD enclosures (which works fine though). As I mentioned, I measured the powerdraw at spin up and it is ~0.95A, and then gets lower to ~0.3-0.5A

But there is nowhere to provide power for the powered hub ...

Sorry, but don't get that!
powered HUB comes with its own PSU.

What David refers to is my original post where I mention that I don't have any extra power sockets that I could use. But anyway, I am not sure how would a powered USB hub help me?

Statistics: Posted by enraged tomato — Thu Jul 11, 2024 9:59 am

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